Battery cell thermal runaway early warning detection sensor and battery module

CN224327836UActive Publication Date: 2026-06-05SUZHOU JK ENERGY LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: SUZHOU JK ENERGY LTD
Filing Date: 2025-04-30
Publication Date: 2026-06-05

AI Technical Summary

Technical Problem

In existing technologies, lithium battery thermal runaway detection suffers from lag, and external temperature sensors cannot respond in a timely manner to the risk of internal thermal runaway, resulting in inaccurate detection and insufficient safety.

Method used

A flexible pressure sensor is used, which is fitted between two adjacent battery cells. It includes a flexible pressure sensor, a pressure bearing plate, and an encapsulation plate. It can provide early warning by detecting changes in the expansion force of the battery cells. The sensing part of the flexible pressure sensor feeds back the pressure detection value to the battery control system in real time.

Benefits of technology

It enables very early warning of thermal runaway in battery cells, improves the accuracy and safety of detection, and can provide timely alarms to avoid the problem of delayed thermal runaway.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN224327836U_ABST

Patent Text Reader

Abstract

The utility model discloses a kind of battery cell thermal runaway extremely early warning detection sensor and battery module, wherein, the sensor is attached between two adjacent battery cells, comprising: flexible pressure sensor, the pressure-bearing piece attached to the both sides of the flexible pressure sensor, and encapsulation piece;The flexible pressure sensor includes sensing part and feedback part, the sensing part is used to receive the pressure of pressure-bearing piece to form pressure detection value, the feedback part is used to be connected with battery control system to feedback the pressure detection value;The pressure-bearing piece is attached with the sensing part, and the pressure-bearing piece can cover the side of battery cell;The encapsulation piece is used to integrate the flexible pressure sensor and the pressure-bearing piece encapsulation.The utility model can realize extremely early thermal runaway early warning by feedback pressure detection value generated by battery cell expansion, and greatly improve battery cell thermal runaway detection accuracy and security.

Need to check novelty before this filing date? Find Prior Art